Washingtonia robusta
Garten-Zeitum (Berlin) 2: 198. 1883.
Common names: Mexican fan palm palmier évantail du Mexique
Introduced
Synonyms: Neowashingtonia robusta (H. Wendland) A. Heller Neowashingtonia sonorae (S. Watson) Rose Washingtonia filifera var. robusta (H. Wendland) Parish Washingtonia filifera var. sonorae (S. Watson) M. E. Jones Washingtonia gracilis Washingtonia robusta var. gracilis (Parish) Beccari Washingtonia sonorae
Treatment appears in FNA Volume 22. Treatment on page 106.
Stems taller, more slender than preceding species, 50–80 cm diam. 2n = 36.
Phenology: Flowering spring.
Habitat: Native to desert washes where underground water is continuously available, naturalized in disturbed areas with moderate rainfall
Distribution
Introduced; Calif., Fla., Mexico (native to Baja California Sur and Sonora).
Discussion
The name Washingtonia filifera var. robusta (H. Wendland) Parish is nomenclaturally a synonym of W. robusta, although it was applied by S. B. Parish to palms now known as W. filifera. Hence, Parish's variety has been included erroneously by L. H. Bailey (1936) and others in synonymy under W. filifera.
Washingtonia robusta is widely cultivated in warm areas in the United States and has occasionally naturalized in Florida (S. Zona 1997) and southern California (J. W. Cornett 1986).
Selected References
Lower Taxa
None.